#10595: BuiltinRules override other rules in some cases. -------------------------------------+------------------------------------- Reporter: gjsimms | Owner: Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by thomie): * status: closed => new * resolution: invalid => Comment: HEAD now shows the following warning for the example from the description: {{{ Test.hs:4:11: warning: Rule "d exp" may never fire because rule "Class op exp" for ‘exp’ might fire first Probable fix: add phase [n] or [~n] to the competing rule }}} That "Probable fix" is not probable at all, because "Class op exp" is a built-in rule. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10595#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler